97bf7a5969
For non-compressed non-hole file extent items, the ram_bytes should match disk_num_bytes. But due to kernel bugs, we have several cases where ram_bytes is not correctly updated. Thankfully this is really a very minor mismatch and can never cause data corruption since the kernel does not utilize ram_bytes for non-compressed extents at all. So here we just detect and repair it for lowmem mode. Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
74 lines
3.6 KiB
C
74 lines
3.6 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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/*
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* Defines and function declarations for lowmem mode check.
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*/
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#ifndef __BTRFS_CHECK_MODE_LOWMEM_H__
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#define __BTRFS_CHECK_MODE_LOWMEM_H__
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#define ROOT_DIR_ERROR (1U << 1) /* bad ROOT_DIR */
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#define DIR_ITEM_MISSING (1U << 2) /* DIR_ITEM not found */
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#define DIR_ITEM_MISMATCH (1U << 3) /* DIR_ITEM found but not match */
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#define INODE_REF_MISSING (1U << 4) /* INODE_REF/INODE_EXTREF not found */
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#define INODE_ITEM_MISSING (1U << 5) /* INODE_ITEM not found */
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#define INODE_ITEM_MISMATCH (1U << 6) /* INODE_ITEM found but not match */
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#define FILE_EXTENT_ERROR (1U << 7) /* bad FILE_EXTENT */
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#define ODD_CSUM_ITEM (1U << 8) /* CSUM_ITEM error */
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#define CSUM_ITEM_MISSING (1U << 9) /* CSUM_ITEM not found */
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#define LINK_COUNT_ERROR (1U << 10) /* INODE_ITEM nlink count error */
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#define NBYTES_ERROR (1U << 11) /* INODE_ITEM nbytes count error */
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#define ISIZE_ERROR (1U << 12) /* INODE_ITEM size count error */
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#define ORPHAN_ITEM (1U << 13) /* INODE_ITEM no reference */
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#define NO_INODE_ITEM (1U << 14) /* no inode_item */
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#define LAST_ITEM (1U << 15) /* Complete this tree traversal */
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#define ROOT_REF_MISSING (1U << 16) /* ROOT_REF not found */
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#define ROOT_REF_MISMATCH (1U << 17) /* ROOT_REF found but not match */
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#define DIR_INDEX_MISSING (1U << 18) /* INODE_INDEX not found */
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#define DIR_INDEX_MISMATCH (1U << 19) /* INODE_INDEX found but not match */
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#define DIR_COUNT_AGAIN (1U << 20) /* DIR isize should be recalculated */
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#define BG_ACCOUNTING_ERROR (1U << 21) /* Block group accounting error */
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#define FATAL_ERROR (1U << 22) /* Fatal bit for errno */
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#define INODE_FLAGS_ERROR (1U << 23) /* Invalid inode flags */
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#define DIR_ITEM_HASH_MISMATCH (1U << 24) /* Dir item hash mismatch */
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#define INODE_MODE_ERROR (1U << 25) /* Bad inode mode */
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#define INVALID_GENERATION (1U << 26) /* Generation is too new */
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#define SUPER_BYTES_USED_ERROR (1U << 27) /* Super bytes_used is invalid */
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#define RAM_BYTES_MISMATCH (1U << 27) /* Non-compressed extent has wrong ram_bytes */
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/*
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* Error bit for low memory mode check.
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*
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* Currently no caller cares about it yet. Just internal use for error
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* classification.
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*/
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#define BACKREF_MISSING (1U << 0) /* Backref missing in extent tree */
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#define BACKREF_MISMATCH (1U << 1) /* Backref exists but does not match */
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#define BYTES_UNALIGNED (1U << 2) /* Some bytes are not aligned */
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#define REFERENCER_MISSING (1U << 3) /* Referencer not found */
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#define REFERENCER_MISMATCH (1U << 4) /* Referencer found but does not match */
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#define CROSSING_STRIPE_BOUNDARY (1U << 4) /* For kernel scrub workaround */
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#define ITEM_SIZE_MISMATCH (1U << 5) /* Bad item size */
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#define UNKNOWN_TYPE (1U << 6) /* Unknown type */
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#define ACCOUNTING_MISMATCH (1U << 7) /* Used space accounting error */
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#define CHUNK_TYPE_MISMATCH (1U << 8) /* Extent type and chunk type don't match */
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#define BACKREF_OUT_OF_ORDER (1U << 9) /* Inline backrefs out of order */
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int check_fs_roots_lowmem(void);
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int check_chunks_and_extents_lowmem(void);
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#endif
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